<!DOCTYPE html>
<html>
<head>
<style type="text/css">
html {
  background: url() no-repeat center center fixed; no-repeat center center fixed;
  background-size: cover;
  image-rendering: -moz-crisp-edges;         /* Firefox */
}
</style>
</head>
<body style="display:none">
</body>
</html>
